Lightning-arrester.



No. 883,613. PATENTE@ MAR. 3l, HE V. BASTIN.'

LIGHTNING ARRBSTER.

APPLICATION FILED 00,112,190?.

W/TNESSES I-IENLEY VEDDR BASTIN, OF LANCASTER, KENTUCKY,

To all whom it may concern:

Be it knownV that I, HENLEY VEDDER BASTIN, a citizen of the UnitedStates, and a resident of Lancaster, in the county of Gar-l rard andState of Kentucky, have invented a new and Im roved Lightning Arrcster,of

which the fol owing is a full, clear, and exact description.

This invention contemplates the provision of an improved lightningarrester, the same being designed to facilitate as much as ractical thedischar e or separation of hig potential currents rom the dynamic oruseful current in electrical circuits. This I accomplish by a coil,forming a part of the circuit and surrounded by a line cylinder and around cylinder, the ground cylinder being located, between the coilandthe line cylin-v der, each presenting a large number of points oredges'whereby little resistance to the currents of high potential inpassing from both the coil and line cylinder to the ground, will beoffered, I

The invention, from a mechanical standu point, further provides for thecompact and easy assemblage of the parts and for their convenientinspection and protection from the elements. y Reference is to be had tothe accompanying drawings forming a part of this specilication, in whichsimilar characters of reference indicate corresponding parts in both theviews.

Figure 1 is a longitudinal central section of a lightning arresterembodying my invention; and Fig. 2 is a like fragmentary sectional viewshowing a slight modiiication of the construction.

More specifically described, my improved lightning arrester aspreferably constructed comprises a line cylinder 1 and a ground cylinder2, the latter bein concentrieally arranged within the line cy inderandeach being provided with a series of transverse V-sha ed corrugations 3,the corrugations of the ine cylinder 1 having theirsharpened edges onthe interior, and the corrugations of the ground cylinder 2 havingtheirshar cned edges both interiorly and' exterior y alternating with eachother and arranged in the interval of the corrugations in the linecylinder.

Within the ground cylinder 2, surrounding an insulating c lindervll, isa coil 5 forming a part of the e ectrical circuit, the same' being ofangular cross-section and either y Specification of Letters Patent.

Application filed October 12, 1907. Serial No. 397,088.

iron core 13.

Patented March 3 1, 1908.

insulated, as shown in Fi 2, or exposed as shown in Fig. 1. The coi 5connects at one end, which as shown is atthe top, with a flangedinternally-threaded couphng 6 attached within a counterbored recessconcen-k trically formed in the head of the insulating cylinder 4.Threaded Within this coupling 6 is the central projecting portion orstud of a plug 7, the latter also being secured to the line cylinder asby the machine screws shown, and operating not Aonly as a conductorbetween the line Wire and the coil, and the line cylinder but alsoinclosing this end of the said cylinder and sup orting the inclosedparts. For attaching t eline wire to the plug 7, the latter is providedwith a clamp 1n the nature of a plate 8 having a groove on its underface for receiving the wire and operating to forcibly press the same tothe plug under the action of the screws y9.

The oppositeend of theline cylinder 1 is closed and supports theadjacent parts `at this end of the arrester by an insulating lug 10, thelatter having a reduced portion W ichV passes within the ground cylinderand is provided with openings through which l'ass the terminals 1l and12 of the ground cylinder and coil, respectively; the last-namedterminal having electrical contact with the coil, and is held in lace bythe aid of a screw 14 which passes t rough the insulating cylinder 4,and'is threaded into and supports an inner Each of the terminals 11 and12 is threaded exteriorly of the plug 1() for receiving suitable nutsbetween which are clamped clips 15 vand 16 respectively. To the clips 15and 16, the ground wire andthe continuation ofthe line Wire mayberespectively attached as by soldering,` or these wires may be directlysecured between the nuts of their respective terminals.

By the construction of my .improved lightning arrester as hereinbeforedescribed and as illustrated, it will be observed that the ground andline cylinders present a large number of sharp points or ed es asalsodoes the coil 5, whereby currents o high otential will be dischargedfrom both the coi and line cylinder to the ground cylinder and therebyconducted tothe ground. The coil 5 will also offer a substantialimpedance to vthe passage of high frequency currents to the terminal 12;thus permitting only the dynamic or useful current to pass through thearrester.`

Whileythe construction and arrangement of my imtproved lightningarrester as shown,

Patent:

1. In a device of the character described, acoil adapted to form a partof an electrical circuit, a ground cylinder surrounding said coil, and aline cylinder in connection with said circuit and surrounding the groundcylinder.

2. In a device of the character described, means adapted to form a partof an electrical circuit offering an impedance to high frequencycurrents, and a ground cylinder surrounding said means and provided withprojecting points or edges, for the purpose described.

3. In a device of the characterv described, a coil adapted to form apart of an electrica-l circuit, a ground cylinder surrounding said coilprovided with projecting edges, and a line cylinder in connection w1thsaid circuit and surrounding the ground cylinder, having projectingedges arranged in the intervals of the said edges carried bythe groundcylinder.

4. In a device of the character described, a coil adaptedto form a partof an electrical circuit, a ground cylinder having V-shapcd- 'transversecorrugations providing internally and externally-projecting edgesalternating with each other, and a line cylinderin connection with saidcircuit and surrounding the ground cylinder, having transverse V-shapedcorrugations providing internally-pro'ecting edges arranged in theintervals of t e said edges carried by the ground cylinder.

5. In a device of the character described,

a coil of angular cross-section adapted to form a part of an electricalcircuit, a ground cylinder surroundin said coil, having projectin pointsor e ges internall and externa y thereof, and a line cylin er inconnection with saidcircuit and surrounding the ground cylinder, havinginternally-projectinlg points `or edges.

6. n a device of the character described the combination of an insulatedcore, a helical conductor surrounding the core, a cylinder electricallyconnected with the conductor, and a ground cylinder located intermediatethe conductor and the inst-named cylinder.

7. In a device of the character described, the combination of a'cylinder of conducting material, a pluv of conducting material closingone end ori said cylinder and secured thereto, means for attaching aline Wire to said plug, an insulating plug closing the opposite end ofsaid cylinder, an insulated core su )ported between said plugs withinsaid cy nder, a helical conductor surrounding the core and connectedwith the conducting plug, and a round cylinder, located interina iatethe h ical conductor andthe first-named cylinder.

8. In a device of the character described, the combination of aninsulated core, a helical conductor surrounding said core adapted to beelectrically connected with a line wire, a line cylinder surrounding theconductor, and a ground cylinder located intermediate the conductor andthe line cylinder.

In testimony whereof I have signed my name to this specification in thepresence of two subscribin witnesses.

HENEY VEDDER BASTIN.

Vitnesses:

C. D. WALKER, W. O. RIGNEY.

